SPAM.
Easy for us to know, because admin does not have a facebook account
Other clues:
Uses the email address name as the real name. Most services know who you are and would use a properly capitalized name. Now if they had adjusted it to Hey Admin it may have fooled us.
No real personal info include in email.
The email was sent from Airtelbroadband in India. Not a likely source for an official facebook email.
Don't need an attachment to send a new password. Anytime there is an attachment gratuitously added, be suspicious.